q. 15

Find the final amount in the following retirement account, in which the rate of return on the account and the regular contribution change over time. $1200 per quarter invested at 6,4%, compounded quarterly, for 12 years; then $1600 per quarter invested at 7.1%, compounded quarterly, for 17 years, Find the final amount in the account. (Do not round until the final answer. Then found to the nearest dollar as needed.)